Posts tagged with 'browsers'

I have been looking for an easy and reliable way to develop and test Launchpad with Internet Explorer. Neither of the two common approaches used by Ubuntu users allows a Launchpad developer to easily verify that a change works with Internet Explorer. The challenge is to install a working version of Internet Explorer 8 and browse the local development instance of Launchpad. Maybe you can help me find a way to do this?

While Internet Explorer only represents 4% of Launchpad users, recent changes to make Launchpad easier to use made many tasks for IE users impossible to complete. This was unintended. It is a regression, and we treat all regressions as critical issues. The Purple squad reviewed the code and found that a lot of Launchpad JavaScript is disabled for all versions of Internet Explorer without an explanation nor fall-back behaviour. There is no documented way to ensure Launchpad works with Internet Explore, so most developers do not try to make it work.

Microsoft’s developer image of Windows 7 + IE8

Microsoft provides many images of Windows and IE so that Web developers can ensure their code works. The images are compatible with VirtualBox. The installation of the required software is easy, though configuration is tricky. The greatest challenge is creating a reusable Apache2 config for the many Launchpad domains.

Microsoft provides VPC compatible IE images to anyone who wants to verify that a website works with a specific version of IE. You will need about 13GB of disk space to install and run this bloatware that we all have come to expect with Windows. I installed the needed software using these commands:

I started VirtualBox and changed the preferences to use the path where I had lots of disk space. I created a new Windows 7 instance using the virtual disk. The disk had to be mounted as IDE (SATA failed) and the network was set as bridged.

IE worked perfectly with Ubuntu’s SSO. I could use Launchpad as I expected. In the cases where I expected a problem, I could see behaviours that confirmed my suspicion about the nature of the defect. This setup is ideal for verifying changes on Launchpad’s qastaging and production servers.

Making this setup work with the Launchpad development instance was very difficult. I hard-coded IP addresses to ensure that Windows and Apache knew the *.launchpad.dev sites. My IP address on my local network was 192.168.1.7 at that moment.

Ubuntu: AddedAllow from 192.168.1.*
after all occurrences ofAllow from localhost 127.0.0.0/255.0.0.0

I could login but I discovered that I occasionally needed to rearrange the entries in the Windows hosts file because it has a character limit! Every time my computer’s IP address changes, I need to update the Windows hosts file and the Ubuntu Apache config. I do not mind editing my IP in the Windows host file, but I do not like editing the entries or updating the Apache config. I doubt this setup works for developers using LXCs or other VMs to run Launchpad. I am planning to switch to LXC when Precise is released so this solution may not work for me in a few weeks.

Wine + Winetricks + IE8

Winetricks is a tool that can install and configure IE8 so that it runs on Ubuntu. Installation is very easy, but the UI’s controls and menus are broken. The greatest challenge is that the security behaviour is different from real Windows and IE — the browser thinks real Ubuntu SSO and the entire Launchpad development site is insecure so does not send the required REFERER header.

The UI does not look like IE8, and the broken buttons and menus certainly do not lend any confidence that this works. I can see from the Apache log that my request to https://launchpad.dev/claims to be MSIE 8. I cannot login to the website though. I can see in the logs that the REFERER header was not sent, so the post was rejected. The same is true for posting to the real Ubuntu SSO and Launchpad website — all posted forms fail. IE does this when it believes the browser is posting across a security boundary; it is protecting the user. Since the real Windows 7 + IE8 does not see either the development or production instance as unsecure, I know that something is misconfigured in Wine. I believe the SSL was install correctly because the real IE8 accepted it as did my Ubuntu browsers.

I can make the Launchpad development instance work with the broken Wine IE8 by hacking lp.services.webapp.publication to not requiring the REFERER header for MSIE 8 when the launchpad instance’s host end with “.dev”. This permits me to verify that JavaScript works, but is it really verifying that real IE8 works? I have no confidence in this hack. What else is broken in the setup?

[1] The default Launchpad SSL certificate in the Launchpad tree that is installed by rocketfuel-setup is incomplete. I generated a certificate that properly specified the sites it was for. I installed the better certificate in /etc/apache2/ssl and in my local OpenSSL store. The immediate benefit is that all of my development browsers accept the SSL certificate; not warning about wrong domains. I will add the better certificate to the Launchpad development tree and the script I used to generate and install it.